Screening device for workpieces

Abstract

The utility model discloses a workpiece screening device which comprises a base, a first supporting frame is fixedly assembled on the top of the base, a screening mechanism is fixedly assembled on the top of the first supporting frame, and a conveying assembly is fixedly assembled on the top of the base. According to the device, the first vibrating screen and the second vibrating screen are arranged in the screening mechanism to screen workpieces and plastic molds, meanwhile, materials located at the top of the first vibrating screen can be pushed into the first vibrating screen through the arranged material pushing assembly, and the situation that the materials are retained in the screening mechanism, and consequently screening is not in time is avoided; compared with a traditional manual screening mode and a screening mode with a single vibrating screen, the device can effectively improve the efficiency of screening and classifying the workpieces and the plastic molds.

Description

Technical Field

[0001] The utility model relates to the technical field of workpiece screening, in particular to a screening device for workpieces. Background Art

[0002] When processing some small-sized workpieces (such as screws and nuts), an injection molding device is usually used for processing. During the production process, along with the formation of the workpieces, a plastic mold skeleton generated in cooperation with the workpieces during the injection molding process is mostly arranged inside the workpieces. After processing, the plastic mold will be discharged together with the workpieces. For the existing separation of the workpieces and the plastic mold after discharging, the manual screening method or only a single vibrating screen is mostly used for screening operation, resulting in low separation efficiency between the workpieces and the plastic mold, which affects the subsequent sorting and packing of the workpieces. Therefore, we propose a screening device for workpieces. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a screening device for workpieces to solve the problems raised in the above background art.

[0004] To achieve the above purpose, the utility model provides the following technical solution: A screening device for workpieces, including a base, a first support frame is fixedly assembled on the top of the base, a screening mechanism is fixedly assembled on the top of the first support frame, and a conveying component is fixedly assembled on the top of the base;

[0005] The screening mechanism includes a screening frame, a feeding frame is fixedly assembled on the top of the screening frame, a discharge port is formed in the side wall of the screening frame, a first vibrating screen and a second vibrating screen are fixedly assembled in the inner cavity of the screening frame, and a discharge frame and a guiding frame are fixedly assembled on the side wall of the screening frame at the position of the discharge port.

[0006] Preferably, the first vibrating screen and the second vibrating screen are arranged in an upper and lower staggered manner, and the first vibrating screen and the second vibrating screen are inclined towards the discharge port.

[0007] Preferably, a guiding plate is fixedly assembled in the inner cavity of the screening frame.

[0008] Preferably, a pushing component is fixedly assembled on the top of the screening frame. The pushing component includes a telescopic cylinder, the telescopic cylinder is fixedly assembled on the top of the screening frame, the output end of the telescopic cylinder is rotationally connected with a connecting frame, and the connecting frame penetrates into the screening frame and is fixedly assembled with a pushing plate.

[0009] Preferably, the conveying component includes a receiving frame, the receiving frame is fixedly assembled on the top of the base through a second support frame, a conveyor is fixedly assembled on the top of the base, and the receiving frame is inclined towards the inlet position of the conveyor.

[0010] Compared with the prior art, the beneficial effects of the present utility model are as follows: A screening device for workpieces separates workpieces from plastic molds by cooperating a first vibrating screen and a second vibrating screen within a screening mechanism, and the separated plastic molds are conveyed back to a crushing device through the cooperation of a material guiding frame and a conveying assembly. After being crushed, they can be directly used for the production requirements of an injection molding device. The process of recycling plastic molds repeatedly is more convenient and fast, which helps to improve production efficiency;

[0011] While the device screens workpieces and plastic molds by arranging a first vibrating screen and a second vibrating screen within the screening mechanism, the provided pushing component can push the materials located at the top of the first vibrating screen into the first vibrating screen, avoiding the situation where materials are detained within the screening mechanism, resulting in untimely screening. Compared with the traditional manual screening and the screening method using a single vibrating screen, this device can effectively improve the screening and classification efficiency of workpieces and plastic molds. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a perspective view of the present utility model.

[0013] Figure 2 is a structural schematic diagram of the present utility model.

[0014] Figure 3 is a schematic diagram of the assembly relationship between the present utility model, an injection molding device, and a crushing device.

[0015] In the figure: 1, base; 2, first support frame; 3, screening mechanism; 31, screening frame; 32, feeding frame; 33, first vibrating screen; 34, second vibrating screen; 35, discharge port; 36, discharge frame; 37, material guiding frame; 38, material guiding plate; 4, conveying assembly; 41, receiving frame; 42, second support frame; 43, conveyor; 5, pushing component; 51, telescopic cylinder; 52, connecting frame; 53, pushing plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0016] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model.

[0017] Please refer to Figure 1 , Figure 2 and Figure 3, the present utility model provides a technical solution: a screening device for workpieces, including a base 1, on the surface of the base 1, a first support frame 2 is fixedly assembled, and at the top of the first support frame 2, a screening mechanism 3 for screening workpieces is fixedly assembled. Through the screening mechanism 3, screw-type workpieces are separated from the plastic molds sleeved thereon, and the plastic molds are transported into the crushing equipment through the conveying assembly 4 assembled on the surface of the base 1. After the plastic molds are crushed, they can be melted again and applied to the injection molding equipment for recycling, saving resources.

[0018] As Figure 2 As shown in the figure, the screening mechanism 3 includes a screening frame 31, the screening frame 31 is fixedly assembled at the top of the first support frame 2, and at the top of the screening frame 31, a feeding frame 32 fixedly connected thereto is fixedly assembled. The feeding frame 32 is communicated with the inner cavity of the screening frame 31. Through the feeding frame 32, plastic molds and screw-type workpieces are introduced into the inner cavity of the screening frame 31. In the inner cavity of the screening frame 31, a first vibrating screen 33 and a second vibrating screen 34 are fixedly assembled. The first vibrating screen 33 and the second vibrating screen 34 are arranged in a staggered up-and-down manner in the inclined direction of the discharge port 35 of the screening frame 31. The first vibrating screen 33 and the second vibrating screen 34 are both electrically connected to an external power source. The first vibrating screen 33 and the second vibrating screen 34 are internally provided with vibrating motors. Through the vibrating motors, the frames inside them are vibrated, so that the small screw-type workpieces are separated from the plastic molds. The small workpieces can fall from the bottom of the vibrating screen into the screening frame 31, while the larger-sized plastic molds move above the frame. At the discharge port 35 of the screening frame 31, a discharge frame 36 and a guide frame 37 are fixedly assembled. The guide frame 37 is clamped in the discharge frame 36. The position of the guide frame 37 corresponds to the position of the second vibrating screen 34. The discharge frame 36 is used for discharging small screw-type workpieces, and the guide frame 37 is used for guiding the discharge position of the plastic molds;

[0019] A guide plate 38 is fixedly assembled at the bottom of the screening frame 31 and is arranged in an inclined manner. The inclined guide plate 38 facilitates guiding the small workpieces, avoiding blockage of the small screw-type workpieces in the screening frame 31 after screening, and enabling them to smoothly enter the position of the discharge frame 36 for discharging;

[0020] As Figure 2As shown in the figure, a material pushing component 5 is fixedly assembled at the top of the screening frame 31. Through the provided material pushing component 5, the plastic mold located at the connection position of the first vibrating screen 33 and the second vibrating screen 34 can be pushed, and the material on the top of the first vibrating screen 33 can be pushed into it for screening operation, avoiding the plastic mold being stuck at the top of the first vibrating screen 33, thus preventing the material from being fed into the second vibrating screen 34 and affecting its subsequent discharging steps. The material pushing component 5 includes a telescopic cylinder 51, which is fixedly assembled at the top of the screening frame 31. The input end of the telescopic cylinder 51 is connected to an external air pump, and the action of the output end of the telescopic cylinder 51 is controlled by the external air pump. The output end of the telescopic cylinder 51 is rotatably connected to a connecting frame 52. The connecting frame 52 penetrates into the inner cavity of the screening frame 31 and is fixedly connected to a material pushing plate 53. The material pushing plate 53 is in contact with the top position of the first vibrating screen 33. Since the connecting frame 52 and the telescopic cylinder 51 are rotatably connected, during the process of the telescopic cylinder 51 driving the connecting frame 52 and the material pushing plate 53 to move, the material pushing plate 53 can slide along the inclined top of the first vibrating screen 33 to push the material at the top position of the first vibrating screen 33 and push the material to be screened into it.

[0021] The conveying component 4 includes a material receiving frame 41. The material receiving frame 41 is fixedly assembled on the surface of the base 1 in an inclined manner through a second support frame 42. A conveyor 43 is fixedly assembled on the surface of the base 1 and is arranged upward. The conveyor 43 includes a conveying frame. Symmetrically arranged conveying rollers are provided in the conveying frame. A conveying belt is sleeved on the outer side wall of the conveying rollers. A motor for driving the conveying rollers is arranged on the side wall of the conveying frame. By driving the conveying rollers by the motor, the conveying belt can convey the material falling on its surface. The plastic mold moved out from the material guiding frame 37 enters the material receiving frame 41, and then through the transfer of the material receiving frame 41, the plastic mold is guided to the starting point of the conveyor 43. The conveying direction of the conveyor 43 is from bottom to top. The plastic mold is conveyed by the conveyor 43 into the crushing equipment for re-crushing and reuse.

[0022] Working principle: As Figure 3As shown in the figure, the device is assembled at the discharging position of the injection molding equipment, and the discharging position of the conveying component 4 is clamped with the feeding position of the crushing equipment. After the injection molding equipment finishes processing the plastic mold and the corresponding screw-like workpieces, they enter the screening frame 31 from the feeding frame 32. The separation of the plastic mold and the workpieces is completed through the cooperation of the first vibrating screen 33 and the second vibrating screen 34 in the screening frame 31. The workpieces enter the discharging frame 36 from the guiding plate 38 at the bottom of the screening frame 31, which is convenient for centralized collection and packing. The plastic mold enters the material receiving frame 41 through the guiding frame 37. The material receiving frame 41 conveys it to the starting point of the conveyor 43. The plastic mold is conveyed into the crushing equipment by the conveyor 43 for re-crushing. The crushed plastic mold enters the injection molding equipment for cyclic reuse.

Claims

1. A workpiece screening device, comprising a base (1), characterized in that: A first support frame (2) is fixedly mounted on the top of the base (1), a screening mechanism (3) is fixedly mounted on the top of the first support frame (2), and a conveying assembly (4) is fixedly mounted on the top of the base (1); The screening mechanism (3) comprises a screening frame (31), a feeding frame (32) is fixedly mounted on the top of the screening frame (31), a discharge port (35) is provided on the side wall of the screening frame (31), a first vibrating screen (33) and a second vibrating screen (34) are fixedly mounted in the inner cavity of the screening frame (31), and a discharge frame (36) and a guide frame (37) are fixedly mounted on the side wall of the screening frame (31) at the discharge port (35).

2. A workpiece screening device according to claim 1, characterized in that: The first vibrating screen (33) and the second vibrating screen (34) are arranged in an upward and downward staggered manner, and the first vibrating screen (33) and the second vibrating screen (34) are inclined in a direction toward the discharge port (35).

3. A workpiece screening device according to claim 1, characterized in that: The inner cavity of the screening frame (31) is fixedly equipped with a material guide plate (38).

4. A workpiece screening device according to claim 1, characterized in that: A material pushing assembly (5) is fixedly mounted on the top of the screening frame (31), and the material pushing assembly (5) comprises a telescopic cylinder (51). The telescopic cylinder (51) is fixedly mounted on the top of the screening frame (31), and an output end of the telescopic cylinder (51) is rotatably connected to a connecting frame (52). The connecting frame (52) penetrates into the screening frame (31) and is fixedly mounted with a material pushing plate (53).

5. A workpiece screening device according to claim 1, characterized in that: The conveying assembly (4) comprises a material receiving frame (41), wherein the material receiving frame (41) is fixedly mounted on the top of the base (1) via a second support frame (42), a conveyor (43) is fixedly mounted on the top of the base (1), and the material receiving frame (41) is inclined towards the entrance position of the conveyor (43).

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